COLDCARD is the world’s most trusted and secure Bitcoin Signing Device (a.k.a Bitcoin hardware wallet).
Dual Secure Element
It provides the best Physical Security. Your seed words are stored in specialized chips, designed solely to securely store secrets. Now dual-vendor!
Verifiable Source Code
All of the Coldcard code is viewable, editable, and verifiable. You can compile it yourself.
True Air-gap
Only signing device (hardware wallet) with option to avoid ever being connected to a computer, for its full life cycle: from seed generation, to transaction signing. Uses PSBT (BIP174) natively!